%0 Journal Article %A A. Adolphson %A S. Sperber %T Newton polyhedra and the degree of the L-function associated to an exponential sum. %J Inventiones mathematicae %D 1987 %P 555-570 %V 88 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1987__88_143466/ %F IM_1987__88_143466